We’ve added a larger size of our popular spa Chlorinating Concentrate to our lineup. This new 5 lb. bottle has a built in handle for easy carrying. And Chlorinating Concentrate is easy to use as well. This quick dissolving sanitizer kills bacteria in spa water to keep the water clean and looking great. Ideal as a sanitizer or a routine shock, Chlorinating Concentrate makes spa water care easy and fast. Contains 62% available chlorine for regular sanitizing and oxidizing of spa water.